6576886820 has 144 divisors (see below), whose sum is σ = 16422361200. Its totient is φ = 2205536256.

The previous prime is 6576886819. The next prime is 6576886847. The reversal of 6576886820 is 286886756.

It can be written as a sum of positive squares in 8 ways, for example, as 1869005824 + 4707880996 = 43232^2 + 68614^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10659152 + ... + 10659768.

It is an arithmetic number, because the mean of its divisors is an integer number (114044175).

Almost surely, 2^6576886820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6576886820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8211180600).

6576886820 is an abundant number, since it is smaller than the sum of its proper divisors (9845474380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6576886820 is a wasteful number, since it uses less digits than its factorization.

6576886820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862 (or 853 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 56.

The square root of 6576886820 is about 81098.0074971019. The cubic root of 6576886820 is about 1873.5852386717.

The spelling of 6576886820 in words is "six billion, five hundred seventy-six million, eight hundred eighty-six thousand, eight hundred twenty".